What are signs that a chemical reaction has occured

If 23.6 grams of a substance reacts with 42.5 grams of another substance, what would we expect the mass of the products to be after the reaction?

Which of these is the main goal of any titration? to observe the effect of indicators on acids to observe the effect of indicators on bases --> (((to determine the concentration of one of the reactants))) <--- to determine the effects of a base on

Describe Rutherford's model of the atom

The particles that are found in the nucleus of an atom are a. neutrons and electrons c. protons and neutrons b. electrons only d. protons and electrons

Silver tarnishes when it comes into contact with hydrogen sulfide in the air. physical property or chemical property

Select the lon. O NO₂ H2SO4 O A3

True or False: A Solar eclipse occurs when Earth casts a shadow on the Moon.

To which digestione organ dose food travel it leaves the stomach

How should a stopper be handled after is has been removed from a reagent bottle?

How will increasing the pressure on the system affect this equilibrium reaction? 2H2 (g) + O2 (g) - > 2H2O (g)